Chain A ( D145 S146 T147 Y148 E149 M150 I151 G152 G153 L154 G193 T194 G195 K196 T197 L198 L199 R201 F317 P320 N321 E323 A324 R325 L326 D327 I328 L329 K330 I331 H332 S333 R334 K335 M336 L344 A348 M351 A354 S355 G356 A357 E358 V359 K360 C363 )